Allow SELinux to run in a container when using the BTRFS storage driver #16452

Distribution

New registrytoken pass-thru token type for AuthConfig#17741 It allows API clients to retrieve an authentication token from a registry, and then pass that token directly to the remote API

Use content-addressable storage for images and layers #17924 Note that a migration is performed the first time docker is run; it can take a significant amount of time depending on the number of images and containers present. Images no longer depend on the parent chain but contain a list of layer references.docker load/docker save tarballs now also contain content-addressable image configurations.

Volumes

Add ls and inspect endpoints to volume plugin API #16534 Existing plugins need to make use of these new APIs to satisfy users’ expectation For that, please use the new MIME type application/vnd.docker.plugins.v1.2+json#19549